Menschenbach tunnel
 Menschenbach tunnel
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 View of the north-east portals (round cross-sections) with the company building and the emergency telephone
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| use | Road tunnel | |||
| traffic connection | Bundesstrasse 14 | |||
| place | People Bach | |||
| length | 1080 m | |||
| vehicles per day | 35000 (forecast) | |||
| Number of tubes | 2 | |||
| construction | ||||
| Client |
Federal Republic of Germany State of Baden-Württemberg |
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| start of building | Spring 2006 | |||
| completion | September 2009 | |||
| planner | Regional council Stuttgart engineering offices Wittke and Boll & Partner | |||
| business | ||||
| release | September 21, 2009 | |||
| Geographical overview | ||||
 The location of the Leutenbach Tunnel is highlighted in pink
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| location | ||||
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| Coordinates | ||||
| North-east portal | 48 ° 53 ′ 15 ″ N , 9 ° 24 ′ 2 ″ E | |||
| South-west portal | 48 ° 53 ′ 1 ″ N , 9 ° 23 ′ 19 ″ E | |||
Map with all coordinates: The Leutenbach Tunnel in the Rems-Murr district in Baden-Württemberg is a 1,080 meter long, twin-tube road tunnel on the motorway-like federal highway 14 between Leutenbach and Winnenden . It is part of the western bypass ( called Bundesstrasse 14n in the construction phase ) between the Winnenden and Winnenden-Hertmannsweiler junctions , which is intended to relieve the Winnenden through-traffic.
Geographical location
The Leutenbach Tunnel is located between Leutenbach in the east and Winnenden in the west. It runs in two arcs under the Hungerberg, an elevation between Leutenbach and Winnenden, the Buchenbach and the Waiblingen – Schwäbisch Hall-Hessental railway line .
history
Construction began in spring 2006, while the necessary preparatory work had already started in July 2005. The earthworks on the route began in November 2005, construction of the tunnel began in spring 2006.
After access to the actual tunnel construction site at a depth of approx. 20 meters was created on the southwest side with a several hundred meters long excavation pit, mining work began there on November 9, 2006 with the construction of the northwest tube, which was named after the tunnel godmother "Evi" has been. The 659 m long tunnel was driven under the Buchenbach, under the Leutenbacher residential area Am Hungerberg , under the railway line Waiblingen-Schwäbisch Hall-Hessental as well as under the Hungerberg itself, with blasting several times a day. The tunnel breakthrough took place on September 4, 2007.
The tunnel construction for the second tube in the southeast ("Edith") took place on June 4, 2007, on February 26, 2008, after eight months of construction, the second breakthrough was celebrated. 130,000 cubic meters of excavation were removed in the tunnel tubes and over 32,000 cubic meters of shotcrete were used for the 45 cm thick inner shell made of reinforced concrete.
The actual tunnel tubes with round cross-sections are joined in the northeast by the 50 m long, open-cut sections to the north-east portals, which are also characterized by round cross-sections, and which are embedded in the slope of the Hunger Mountain. In the southwest, the mining tunnel, which ends shortly after the Buchenbach at a depth of approx. 18 m, was extended by 371 m using the cut-and-cover method. This results in the rectangular cross-section, which also characterizes the south-west portals. Both tunnel ramps have a gradient of approx. 4%, as well as a pronounced right-left curve combination in the southern part.
The final completion was originally planned for summer 2008, but had to be postponed several times. On July 11, 2009, the population was able to visit the tunnel at a tunnel festival. The asphalting was continuous, so nothing stood in the way of a provisional commissioning of at least one tube, even if road markings and parts of the guardrails were still missing. The fans in the tunnel were not yet connected.
On Monday, September 21, 2009 the tunnel was inaugurated in a ceremony with 13 representatives and officials. Afterwards, cyclists could explore the tunnel and route. The southern section was also completely closed. After removing all barriers, the entire Winnenden bypass was finally opened to traffic in the afternoon .
Open excavation on the south-west side in November 2006. In the background the stop for one of the tunnel tubes with a round cross-section.
Construction of the first part of the tunnel in open, angular construction in August 2007.
Work on the open construction method on the north-east portal. The round cross-section requires more effort for the formwork.
Completed south-western tunnel portal in October 2008. The containers on the right are in front of the operations center west.
Tunnel festival on July 11, 2009. View from the north portal in the direction of Backnang. AS Nellmersbach in the background.
The south portal of the Leutenbacher Tunnel after it was opened on September 22, 2009.
Variable message signs in the tunnel. The gradation 100 - 80 - 60 km / h can be clearly seen.
Safety devices
In parallel to the construction of the tunnel, an operating building was erected on each of the portals. A fire fighting water building was erected on Tonweg Street . Underneath, at the end of the more spacious, open-cut tunnel, an emergency stop and an emergency crossing for rescue vehicles were set up. The four escape doors that connect the tunnel tubes are not suitable for vehicles. Further safety devices are the light-colored wall coating, the road surface with brightening stone, the equipment of the tunnel with an active, illuminated guide to the escape doors and the ventilation via radiation fans. Outside the portals there are emergency telephones as well as monitoring devices and pivoting barriers.
On Saturday, September 19, two days before the clearance and eight days before the federal election, a disaster control exercise with 200 participants and several wrecked cars was scheduled. At the later general meeting of the Volksbach volunteer fire brigade , the commanding officer complained that his volunteer firefighters had to take vacation to allow the opening to take place in time for the general election. During the exercise, a fire was simulated and the ventilation system tested, which blows the smoke to the portals at 6 m / s.
Usually, a speed limit of 100 km / h applies in the tunnel - as in other twin-tube tunnels in Baden-Württemberg - but this can be changed by variable message signs, for example during construction work or dense traffic during rush hour.
During the construction period there was a statue of the patron saint of miners, Saint Barbara , in each tunnel tube . These statues were then given a permanent place behind glass at the end of the emergency bays.
After safety devices in the tunnel had triggered false alarms a few days after commissioning, the tunnel was completely closed for ten working days for six hours from the end of October in order to check them. Mobile communications were also retrofitted. In February 2010 the tunnel was closed again for three days in order to make improvements.
Both tunnel tubes were completely closed on several working days during the day in September and October 2010 for the annual operating exercises by the operating and monitoring staff.
costs
The 1080 m long Leutenbach Tunnel (structure 6) cost € 55.1 million. Around 49 million euros of this went to the shell construction and 6 million euros to the technical equipment.
Web links
- Tunnel in Openstreetmap, with stored Google aerial photo
- Menschenbach tunnel - B14 Winnenden bypass (PDF file; 2.29 MB)
- Information about the project from the Stuttgart Regional Council
Individual evidence
- ↑ a b Leutenbach tunnel, Winnenden bypass, page 4. Editor: Regional Council Stuttgart, July 2009
- ↑ Blickpunkt Winnenden, issue 30, p. 4 July 26, 2007 ( Memento from September 29, 2007 in the Internet Archive ) (PDF file; 2.97 MB)
- ↑ Blickpunkt Winnenden, Issue 37, September 13, 2007 ( Memento of September 29, 2007 in the Internet Archive ) (PDF file; 2.60 MB)
- ↑ Blickpunkt Winnenden, Issue 23, June 6, 2007 ( Memento of September 29, 2007 in the Internet Archive ) (PDF file; 1.76 MB)
- ↑ Page no longer available , search in web archives: Blickpunkt Winnenden, Issue 10, March 6, 2008 (PDF file; 2.75 MB)
- ↑ Page no longer available , search in web archives: Blickpunkt Winnenden, Issue 3, January 17, 2008 (PDF file; 1.82 MB)
- ↑ B14 approval on September 21, 2009
- ↑ Florian Muhl: Rescue from a flaming inferno worked. In: bkz-online.de. September 21, 2009. Retrieved September 18, 2018 .
- ↑ Page no longer available , search in web archives: Blickpunkt Winnenden 40/2009 from October 1st, 2009 (3.0 MB)
- ↑ B 14 near Winnenden - Leutenbach Tunnel: Review of the tunnel safety . In: Blickpunkt . No. 44 . Winnenden city administration, October 29, 2009, p. 4 ( archive.org [PDF; 1.5 MB ; accessed on June 30, 2018]).
- ↑ February 18, 2010: B14 tunnel is temporarily closed
- ↑ BKZ September 25, 2010 Tunnel closed due to exercises
- ↑ BKZ September 29, 2010 Security technology at its best